package com.kongwg.java1;

/**
 * @author kongwg
 * @create 2020-12-17 12:13
 */
public class DAO<E> {

    //增加
    public void add(Customer customer){

    }
    //删
    public boolean remove(int index){
        return false;

    }
    //改
    public void update(){

    }
    // 查
    public <T> T getIndex(int index){
        return null;
    }
    //查一堆
    public <T> T getAll(){
        return null;
    }
}
